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import { canonicalizeBaseUrl } from "@gnu-taler/taler-util";
/**
* Validate (the number part of) an amount. If needed,
* replace comma with a dot. Returns 'false' whenever
* the input is invalid, the valid amount otherwise.
*/
const amountRegex = /^[0-9]+(.[0-9]+)?$/;
export function validateAmount(
maybeAmount: string | undefined,
): string | undefined {
if (!maybeAmount || !amountRegex.test(maybeAmount)) {
return;
}
return maybeAmount;
}
/**
* Extract IBAN from a Payto URI.
*/
export function getIbanFromPayto(url: string): string {
const pathSplit = new URL(url).pathname.split("/");
let lastIndex = pathSplit.length - 1;
// Happens if the path ends with "/".
if (pathSplit[lastIndex] === "") lastIndex--;
const iban = pathSplit[lastIndex];
return iban;
}
const maybeRootPath = "https://bank.demo.taler.net/demobanks/default/";
export function getBankBackendBaseUrl(): string {
const overrideUrl = localStorage.getItem("bank-base-url");
return canonicalizeBaseUrl(overrideUrl ? overrideUrl : maybeRootPath);
}
export function undefinedIfEmpty<T extends object>(obj: T): T | undefined {
return Object.keys(obj).some((k) => (obj as any)[k] !== undefined)
? obj
: undefined;
}
/**
* Craft headers with Authorization and Content-Type.
*/
export function prepareHeaders(username?: string, password?: string): Headers {
const headers = new Headers();
if (username && password) {
headers.append(
"Authorization",
`Basic ${window.btoa(`${username}:${password}`)}`,
);
}
headers.append("Content-Type", "application/json");
return headers;
}
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